Introduction Learn about the key features and capabilities of IBM Aspera Sync. Overview IBM Aspera Sync is a software application that provides high-speed, highly-scalable, multi-directional, file-based replication and synchronization. Aspera Sync is designed to fill the performance gap of uni-directional file synchronization tools like rsync, which are often slow for synchronizing large files and large sets of files over the WAN. Additionally, Aspera Sync surpasses the capability of uni-directional synchronization tools with full support for bi-directional synchronization. Synchronization and Direction Modes Aspera Sync offers two modes of operation: one-time ("on demand") synchronization and continuous synchronization, as well as three direction modes: uni-directional, bi-directional, and multi-directional. Aspera Sync FAQ Get answers about what Aspera Sync does and how it does it.